tested CvSlice

ext/opencv/cvslice.cpp

@@ -41,20 +41,11 @@ define_ruby_class()
   VALUE opencv = rb_module_opencv();
   rb_klass = rb_define_class_under(opencv, "CvSlice", rb_cObject);
   rb_define_alloc_func(rb_klass, rb_allocate);
-  rb_define_singleton_method(rb_klass, "compatible?", RUBY_METHOD_FUNC(rb_compatible_q), 1);
   rb_define_private_method(rb_klass, "initialize", RUBY_METHOD_FUNC(rb_initialize), 2);
-}
-
-/*
- * call-seq:
- *   compatible?(<i>obj</i>)
- *
- * same Object#kind_of(Range)
- */
-VALUE
-rb_compatible_q(VALUE klass, VALUE object)
-{
-  return rb_obj_is_kind_of(object, rb_cRange);
+  rb_define_method(rb_klass, "start_index", RUBY_METHOD_FUNC(rb_start_index_aref), 0);
+  rb_define_method(rb_klass, "end_index", RUBY_METHOD_FUNC(rb_end_index_aref), 0);
+  rb_define_method(rb_klass, "start_index=", RUBY_METHOD_FUNC(rb_start_index_aset), 1);
+  rb_define_method(rb_klass, "end_index=", RUBY_METHOD_FUNC(rb_end_index_aset), 1);
 }
 
 VALUE
@@ -78,5 +69,51 @@ rb_initialize(VALUE self, VALUE start, VALUE end)
   return self;
 }
 
+/*
+ * call-seq:
+ *   start_index
+ *
+ */
+VALUE
+rb_start_index_aref(VALUE self)
+{
+  return INT2NUM(CVSLICE(self)->start_index);
+}
+
+/*
+ * call-seq:
+ *   end_index
+ *
+ */
+VALUE
+rb_end_index_aref(VALUE self)
+{
+  return INT2NUM(CVSLICE(self)->end_index);
+}
+
+/*
+ * call-seq:
+ *   start_index = index
+ *
+ */
+VALUE
+rb_start_index_aset(VALUE self, VALUE index)
+{
+  CVSLICE(self)->start_index = FIX2INT(index);
+  return self;
+}
+
+/*
+ * call-seq:
+ *   end_index = index
+ *
+ */
+VALUE
+rb_end_index_aset(VALUE self, VALUE index)
+{
+  CVSLICE(self)->end_index = FIX2INT(index);
+  return self;
+}
+
 __NAMESPACE_END_CVSLICE
 __NAMESPACE_END_OPENCV

ext/opencv/cvslice.h

@@ -22,10 +22,12 @@ VALUE rb_class();
 
 void define_ruby_class();
 
-VALUE rb_compatible_q(VALUE klass, VALUE object);
-
 VALUE rb_allocate(VALUE klass);
 VALUE rb_initialize(VALUE self, VALUE start, VALUE end);
+VALUE rb_start_index_aref(VALUE self);
+VALUE rb_end_index_aref(VALUE self);
+VALUE rb_start_index_aset(VALUE self, VALUE index);
+VALUE rb_end_index_aset(VALUE self, VALUE index);
 
 __NAMESPACE_END_CVSLICE
 
@@ -40,10 +42,15 @@ CVSLICE(VALUE object)
 inline CvSlice
 VALUE_TO_CVSLICE(VALUE object)
 {
-  if(cCvSlice::rb_compatible_q(cCvSlice::rb_class(), object)){
+  if (rb_obj_is_kind_of(object, cCvSlice::rb_class())) {
+    CvSlice* ptr = CVSLICE(object);
+    return *ptr;
+  }
+  else if (rb_obj_is_kind_of(object, rb_cRange)) {
     return cvSlice(NUM2INT(rb_funcall(object, rb_intern("begin"), 0)),
                    rb_funcall(object, rb_intern("exclude_end?"), 0) ? NUM2INT(rb_funcall(object, rb_intern("end"), 0)) : NUM2INT(rb_funcall(object, rb_intern("end"), 0)) - 1);
-  }else{
+  }
+  else {
     rb_raise(rb_eTypeError, "require %s or compatible object.", rb_class2name(cCvSlice::rb_class()));
   }
 }

test/test_cvslice.rb

@@ -0,0 +1,31 @@
+#!/usr/bin/env ruby
+# -*- mode: ruby; coding: utf-8-unix -*- 
+require 'test/unit'
+require 'opencv'
+require File.expand_path(File.dirname(__FILE__)) + '/helper'
+
+include OpenCV
+
+# Tests for OpenCV::CvSlice
+class TestCvSlice < OpenCVTestCase
+  def setup
+    @slice = CvSlice.new(2, 4)
+  end
+
+  def test_initialize
+    assert_equal(CvSlice, @slice.class)
+  end
+
+  def test_start_index
+    assert_equal(2, @slice.start_index)
+    @slice.start_index = 3
+    assert_equal(3, @slice.start_index)
+  end
+
+  def test_end_index
+    assert_equal(4, @slice.end_index)
+    @slice.end_index = 5
+    assert_equal(5, @slice.end_index)
+  end
+end
+